Can-end-soldering machine.



Nb. 700,090. Patented may 27, |902.

H. c. BLACK. CAN END SULDERING MACHINE.

(Application mea June 14, 1901.)

2 Sheets-Sheet I.

(N0 Model.)

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N0..7oo,89o. Patented M-ay27, |902.

H. c.- BLACK. CAN END SULDERING MACHINE.

(Application flled June 14, 1901.) (N0 Model.) Sheets-Shen 2 UNITED STATES PATENT OFFICE.

HENRY C. BLACK, OF OAKLAND, CALIFORNIA.

CAN-.END-SOLYDOERING MACHINE.

srncmmAmoN forming peru ef Lettere retest Ne. 700,890, dated Mey 2'?, 1902.

Application led June 14,1901.

To @ZZ whom, tm/ay concern: p

Beit known that I, HENRY C. BLACK, a citizen of the United States, residing at Oakland, county of Alameda, State of California, have invented certainfnew and useful Improvements in Can-End-Soldering'Machines; and I do hereby declare the following to be afull, clear, and exact description of the same.

The present invention relates to a bathsolderervdesignedfor use in connection with soldering ofv tops and bottoms onto canbodies; and the object of the invention is to reduce the amount of solder at present used in the soldering of the tops and bottoms onto can-bodies, thereby reducing the cost of the' cans-per thousand. e

In order to comprehend the invention, reference should be had to the accompanying sheet of drawings, wherein*- Figure l is a broken side view of the machine, with the primary heater and iluxingreceptacle connected therewith. Fig. 2 is a top plan View of the mechanism illustrated in Fig. l of the drawings, the endless carrier for the cans being removed. Fig. 3 is a rear end View in elevation. Fig. l is a horizontal sectional top plan View taken on line a: :u of Fig. 3 of the drawings; Fig. 5, a front view in elevatiompartly broken away; and Fig. G is a cross-sectional view on line yy, Fig. 2, disclosing the arrangement of the-luX-baths.

The letter A is used to indicate one of the supporting-frames for the solder-bath receptacles, and A' one of the supporting-frames for the primary heater, these frames being united by the ux-holding troughs D and cross-bars dx.

Within frameA is supported thesoldering-bath receptacles B B', which are arranged parallel and each provided with a longitudinal slot c. These receptacles are held within the heat-retaining shells B2 B2. Each shell is formed with a longitudinal opening a in its upper surface,'through which projects the slotted extension b of the solder-bath receptacles. In the presentcase the solder-bath receptacles consist of tubes having their ends closed by screw-plugs b'. Below the heat-retaining shells a series of burners C are arranged, the jet end of each burner extending within the shells B2 B3 through openings serial Netten. (No model.)

b2 in the under face of said shells. i These burners are connected to the air and gas supply'pipes C' C2 by branch pipes d.

To the forward end 4of frame Avis attached one end of the flux-holding troughs D, which are arranged parallel and in line with the heat-retaining shells. The opposite ends of the troughs are connected to frame A', which supports the primary can-heater. This heater consists 4of a suitable trough D', illed with any suitable non-absorbent material of heat, as asbestos. The trough in width is less than the length of the can D2, so that when the same rests thereon the top f and bottom f will extend beyondv the sides of said trough. Below this trough a series of burners D3 are arranged, the flame from which bears against the under surface ofthe trough in order that the heat may be deflected to each side thereof. These burners are connected to the air and gas supply pipes C' C2 by branch pipes d.

The heat-retaining shell B2 is supported at each end by a plate d2, and the shell B3 is similarly supported by plate d', said plates being slotted and itting over studs d3, proj ecting from the frame-standards. The plates are also adjustable` vertically by means of screws e and can be independently adjusted inwardly or outwardly through the medium of screws e e2, respectively. By this inward adjustment of the end plates carrying the respective heat-retaining shells/I am enabled to move the solder-,bath receptacles toward and from each other, and thus adapt the distance between the receptacles to the length of different cans. In this manner the solderingmachine maybe utilized in connection with different-size cans.

Within bearings of the` end standards E E of the machine work the cross-shafts E2 E2, upon which are secured the chain-wheels F F. Over these wheels work the endless-chain carrier F2, by means of which the cans D2 are carried through the machine. e The endless carrier'is driven from cross-shaft E2 by belt (not shown) working over belt-wheel E4, Fig. 3 of the drawings. i f A The cans to be soldered are fed to the primary heater at its feed end from a suitable runway (not shown) and enter beneath the endless carrier F2. This carrier conveys the ICO can over trough D', its top and bottom projecting beyond the sidesof said trough. .Y As carried over the trough D the projecting ends are heated by the deflected heat fromburners D3. As the can is carried beyond the primary heater it rolls onto the Hun-holding troughs D, the heated ends riding upon the strip of absorbent material h, resting within the trough. By means of these strips of material the iiuX Within the troughs is drawn upward. From the iiuxing devices the cans are carried to the soldering, the top and bottom end resting within-the slots a of the solderreceptacles, so as to be in contact with the lnolten solder therein. As carried the length of the receptacles the periphery of the top and bottom ends rotate within the solder-baths and the solder is thus applied tothe joints. The soldered cans are discharged as carried beneath wheel F.

Each solder-bath receptacle is tapped by the solder-feed pipe G, through which solder l is admitted to the receptacles in order to maintain the molten solder at an even level. The solder-bath receptacles B B are slipped into the heat-retaining shells 132133 from either end, each being open, and are held therein v by the shoulders h bearing upon the edges h2 of the said shells. Preferably the feedpipe G for the solder is only employed for the feeding of solder into the solder-bath in order to replenish the solder consumed by the soldering of the tops and bottoms onto the cans. The main supply of solder,or rather the solderbath recept-acles,are originally filled by removing the screw-plugs b at one end and introducing stick solder therein until sufcient solder is introduced, which when melted will fill the said receptacles. The ends are then closed by screwing plugs o therein. The square ends of these plugs are fitted through openings h3 of the slide-plates d d2. Inasmuch as the solder-bath receptacles are confined Within heat-retaining shells and only a small portion of the molten solder is exposed through the slotted receptacles to the atmosphere, oxidation of the solder and loss by. reason of oxidation'is reduced to a minimum.

In order that the cans While carried through the machine may be held against end movement, the guide rods K K are provided. These rods are connected to brackets 7o, inwardly projecting from standards E E', and are located such a distance apart as to permit of the cans rolling freely between the same as carried through the primary heater, the flux-troughs, and solder-bath receptacles. These guide-rods prevent the cans shifting endwise while carried through the machine, and thus hold the same in proper alinement.

Having thus described the invention, what is claimed as new, and desired to be protected by Letters Patent, is-

l. In a machine of the character described, i

a pair of soldering-troughs arranged side by side, a pair of supporting members for each trough, and means for adjusting either pair of said supporting members independently of the other pair to adjust one of the troughs independently of the other; substantially as describedf' 2. Ina machine of the character described,

ently of the other plates; substantially as described.

3. A tubular open-ended soldering-trough having a single narrow longitudinallyarranged slot a terminating at points intermediate of the ends of the trough, anda closure b' for the open end of the trough; substantially as described.

4. A tubular soldering-trough having a single narrow longitudinally-arranged slot a terminating at points intermediate of the ends of the trough, a fill-opening at one end of the trough, an auxiliary till-opening in the body of the trough, and a feed-pipe G leading into said auxiliary dll-opening; substantially as described.

5. In a can-end-solderin g machine, aheater comprising a hollow trough upon which the cans to be operated upon are adapted to run and having sides inclined outwardly and upwardly, a plurality of burners disposed longitudinally of said trough and beneath the lower central portion thereof, said trough being of a Width less than the length of the cans to permit the heating of both ends of said cans simultaneously, and a heat non-conducting tilling in the trough and arranged to underlie the central portion of the cans, substantially as described.

6. In acan-end-soldering machine, a heater comprising an elongated support for the cans to be operated upon vand provided with upwardly and outwardly inclined sides and a fiat upper surface upon which the cans are adapted to run, and a plurality of burners disposedlongitudinally of said trough and beneath the lower central portion thereof, said trough being of a Width less than the length of the cans to permit the heating of both ends of said cans simultaneously, substantially as described.

7. In combination, a slotted tubular heater, and a correspondingly slotted solderingtrough seated in said heater and provided With lateral projections along its upper portion and engaging the edges of the tube surrounding the s lot in the latter; substantially as described.

8. In combination, a slotted tubular heater,

IOO

IIO

a correspondingly slotted soldering-trough,

tion of the sides of the former bearing upon p edges b2 of the latter; substantially as described.

9. In combination, a slotted tubular heater,

. a correspondinglyslotted soldering-trough seated in said heater and provided with lateral projections engaging the edges of the heater surrounding the slot in the latter, and a series of burners arranged longitudinally of the tubular heater beneath the same and pro- 1 jecting slightly thereinto through suitable Io apertures formed in the bottom thereof, substantially as described. v

In witness whereof I have hereunto set my hand.

HENRY C. BLACK. Witnesses:

N. A. ACKER, D. B. RICHARDS. 

